Measurement of identified charged hadron spectra with ALICE using the ITS in proton-proton collisions at the LHC

The study of particle production inside jets makes it possible to address the fragmentation properties of the leading parton depending on its flavour. We study the spectra of K, p and π production in minimum bias (inelastic, non- diffractive), two- and three-jet events at RHIC, Tevatron and LHC energies. To address the properties of quark and gluon jets, different production channels are investigated. We present MC estimate for the contribution of quark and gluon jets to individual hadron spectra, that can be compared to experimental results and test our current knowledge of the physics behind particle production inside jets. Where possible, we cross-check our results with existing data and further extend the study to higher energies.

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Studies of proton-proton collisions at the CERN ISR with an identified charged hadron of high transverse momentum at 90°

Nuclear Physics B ◽

10.1016/0550-3213(79)90230-x ◽

1979 ◽

Vol 160 (1) ◽

pp. 1-41 ◽

Cited By ~ 18

Author(s):

M.G. Albrow ◽

S. Almehed ◽

P.S.L. Booth ◽

X. De Bouard ◽

H. Bøggild ◽

...

Keyword(s):

Transverse Momentum ◽

Charged Hadron ◽

High Transverse Momentum ◽

Proton Proton ◽

Proton Collisions ◽

Proton Proton Collisions

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Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at s=8 TeV

Physical Review Letters ◽

10.1103/physrevlett.123.232001 ◽

2019 ◽

Vol 123 (23) ◽

Author(s):

R. Aaij ◽

C. Abellán Beteta ◽

B. Adeva ◽

M. Adinolfi ◽

C. A. Aidala ◽

...

Keyword(s):

Hadron Production ◽

Charged Hadron ◽

Proton Proton ◽

Proton Collisions ◽

8 Tev ◽

Proton Proton Collisions

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Studies of proton-proton collisions at the CERN ISR with an identified charged hadron of high transverse momentum at 90°

Nuclear Physics B ◽

10.1016/0550-3213(78)90088-3 ◽

1978 ◽

Vol 145 (2-3) ◽

pp. 305-348 ◽

Cited By ~ 41

Author(s):

M.G. Albrow ◽

S. Almehed ◽

P.S.L. Booth ◽

X. De Bouard ◽

H. Bøggild ◽

...

Keyword(s):

Transverse Momentum ◽

Charged Hadron ◽

High Transverse Momentum ◽

Proton Proton ◽

Proton Collisions ◽

Proton Proton Collisions

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Measurement of b jet shapes in proton-proton collisions at $$ \sqrt{s} $$ = 5.02 TeV

Journal of High Energy Physics ◽

10.1007/jhep05(2021)054 ◽

2021 ◽

Vol 2021 (5) ◽

Author(s):

A. M. Sirunyan ◽

◽

A. Tumasyan ◽

W. Adam ◽

F. Ambrogi ◽

...

Keyword(s):

Center Of Mass ◽

Angular Distance ◽

Charged Hadron ◽

Jet Substructure ◽

Proton Proton ◽

Proton Collisions ◽

Center Of Mass Energy ◽

Jet Shapes ◽

Proton Proton Collisions ◽

Jet Axis

Abstract We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data sample used in this study was collected with the CMS detector at the CERN LHC and corresponds to an integrated luminosity of 27.4 pb−1. To characterize the jet substructure, the differential jet shapes, defined as the normalized transverse momentum distribution of charged hadrons as a function of angular distance from the jet axis, are measured for b jets. In addition to the jet shapes, the per-jet yields of charged particles associated with b jets are also quantified, again as a function of the angular distance with respect to the jet axis. Extracted jet shape and particle yield distributions for b jets are compared with results for inclusive jets, as well as with the predictions from the pythia and herwig++ event generators.

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PROSPECTS OF MEDIUM TOMOGRAPHY USING 2-, 3- AND 4-PARTICLE CORRELATIONS FOR A (SEMI)-HARD TRIGGER

International Journal of Modern Physics E ◽

10.1142/s0218301307009087 ◽

2007 ◽

Vol 16 (10) ◽

pp. 3100-3107 ◽

Cited By ~ 7

Author(s):

THORSTEN RENK ◽

JÖRG RUPPERT

Keyword(s):

Monte Carlo Simulation ◽

Monte Carlo ◽

Dense Matter ◽

Correlation Pattern ◽

Proton Proton ◽

Conservation Of Energy ◽

Proton Collisions ◽

Hadron Spectra ◽

Proton Proton Collisions ◽

Nucleus Nucleus Collision

Hard partons propagating through hot and dense matter lose energy, leading to the observed depletion of hard hadron spectra in nucleus nucleus collision as compared to scaled proton proton collisions. This lost energy has to be redistributed in the medium due to the conservation of energy, which is manifest in the pT dependence of the angular correlation pattern of hadrons associate with a (semi-) hard trigger. While at low pT a splitting of a broad peak is observed, at high pT the structure shows vacuum width, albeit with reduced yield. This sugests a transfer of energy from hard partons to a collectively recoiling medium. We present a systematic study of these phenomena using a realistic medium evolution and a Monte-Carlo simulation of the experimental trigger and show what information about the medium can be derived from multiparticle correlations.

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Two-particle correlations in azimuthal angle and pseudorapidity in central $$^7\hbox {Be}+{}^9\hbox {Be}$$ collisions at the CERN Super Proton Synchrotron

The European Physical Journal C ◽

10.1140/epjc/s10052-020-08675-4 ◽

2020 ◽

Vol 80 (12) ◽

Author(s):

A. Aduszkiewicz ◽

◽

E. V. Andronov ◽

T. Antićić ◽

V. Babkin ◽

...

Keyword(s):

Azimuthal Angle ◽

Incident Beam ◽

Charged Hadron ◽

Proton Synchrotron ◽

Super Proton Synchrotron ◽

Proton Proton ◽

Pair Correlations ◽

Proton Collisions ◽

Hadron Pairs ◽

Proton Proton Collisions

AbstractA measurement of charged hadron pair correlations in two-dimensional $$\Delta \eta \Delta \phi $$ Δ η Δ ϕ space is presented. The analysis is based on total 30 million central Be + Be collisions observed in the NA61/SHINE detector at the CERN SPS for incident beam momenta of 19A, 30A, 40A, 75A, and 150A $$\text {Ge} \text {V}/c$$ Ge / c . Measurements were carried out for unlike-sign and like-sign charge hadron pairs independently. The $$C(\Delta \eta ,\Delta \phi )$$ C ( Δ η , Δ ϕ ) correlation functions were compared with results from a similar analysis on p + p interactions at similar beam momenta per nucleon. General trends of the back-to-back correlations are similar in central Be + Be collisions and p + p interactions, but are suppressed in magnitude due to the increased combinatorial background. Predictions from the Epos and UrQMD models are compared to the measurements. Evolution of an enhancement around $$(\Delta \eta ,\Delta \phi ) = (0,0)$$ ( Δ η , Δ ϕ ) = ( 0 , 0 ) with incident energy is observed in central Be + Be collisions. It is not predicted by both models and almost non-existing in proton–proton collisions at the same momentum per nucleon.

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